X-ray detector

Abstract

An x-ray detector includes a scintillation element having a radiation entry side and a radiation exit side disposed in succession in a direction of radiation propagation, with respective photosemiconductor layers in optical contact with the scintillation element being disposed on both the radiation entry side and the radiation exit side of the scintillation element. The layers on each side are separated to form a succession of discrete photodiodes, and the photodiodes on one side of the scintillation element may be offset relative to the photodiodes on the other side of the scintillation element.

We claim our invention: 
     
       1. A detector for radiation propagating in a propagation direction comprising: a scintillation element having a radiation entry face and a radiation exit face disposed in succession in the direction of radiation propagation; and   first and second amorphous hydrogenated silicon semiconductor layers respectively disposed on and in optical contact with each of said entry face and said exit face of said scintillation element.   
     
     
       2. A detector as claimed in claim 1, wherein said first and second layers are laterally offset relative to each other with respect to said radiation propagation direction.